CN1013099B - Method of producing molecular sieve-4a zeolite used in detergent-production with industrial sodium aluminate solution - Google Patents
Method of producing molecular sieve-4a zeolite used in detergent-production with industrial sodium aluminate solutionInfo
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- CN1013099B CN1013099B CN 86106033 CN86106033A CN1013099B CN 1013099 B CN1013099 B CN 1013099B CN 86106033 CN86106033 CN 86106033 CN 86106033 A CN86106033 A CN 86106033A CN 1013099 B CN1013099 B CN 1013099B
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- sodium aluminate
- aluminate solution
- crystallization
- hour
- glue
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- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The present invention relates to a method for producing molecular sieve-4A-type zeolite used for detergents produced by an industrial sodium aluminate solution, which belongs to the production technology and method for producing the molecular sieve-4A-type zeolite used for the detergents. The present invention is mainly characterized in that the present invention utilizes the industrial sodium aluminate solution in alumina production as a raw material and adopts a synchronous turbulent flow charging method and technological conditions, such as two-stage crystallization, etc., to produce the molecular sieve used for the detergents. The present invention has the advantages of convenient source of the raw materials, simple processes, little energy consumption, low cost, no environment pollution, etc., and obtained products are mainly used for detergent builders.
Description
The invention belongs to and produce the production method of washing with the zeolite-4a zeolite.
Producing the detergent use molecular sieve both at home and abroad mainly is chemical synthesis, or claims hydrothermal synthesis method.Of United States Patent (USP) 4339418,4339419, its technology is with technical pure aluminium hydroxide and liquid sodium hydroxide prepared in reaction sodium aluminate solution, its Al
2O
3Concentration is generally the 60-100 grams per liter, then slowly adds water glass by non-equivalent weight with 3-4 time and is mixed into glue, stirs about 100 ℃, and a crystallization makes product through refrigerating work procedure.Above-mentioned technology needs the equipment and the operation of ad hoc preparation sodium aluminate solution, establishes refrigerating work procedure after the crystallization, the Production Flow Chart complexity; Repeatedly slowly reinforced reaching adopted one section crystallization, and product particle is thick, only accounts for 50% less than 4 microns particles, has reduced quality product; To set up the liquid waste disposal operation in addition, production cost is further increased.
The objective of the invention is, provide a kind of operation to simplify and the better 4A zeolite of quality product production technique, this technology is made raw material by using the industrial sodium aluminate solution in the alumina producing, saved the operation of preparation sodium aluminate, changing repeatedly slow feeding is the synchronous turbulent method feeding of equivalent, adopts into two sections crystallization of glue rear slurry, product granularity attenuates, improved quality product, this technology has been removed cooling and liquid waste disposal operation again, makes flow process more become simple.
Feature of the present invention is to utilize the industrial sodium aluminate solution in the alumina producing flow process to make raw material, become rubber cement chemical industry preface to adopt synchronous turbulent method feeding, and the crystallization operation is two sections crystallization.
Details are as follows for technological process of the present invention, gets the industrial sodium aluminate solution in the alumina producing flow process, its Al
2O
3Concentration 25-45 grams per liter, causticization coefficient (causticity Na
2O and Al
2O
3Molecular ratio) 1.5-3.0, its temperature is cooled to 20-50 ℃ for well.For reducing the viscosity of water glass, it can be diluted to SiO
2Concentration is 10-20%.For guaranteeing the purity of product, above-mentioned two kinds of raw materials should carry out purifying treatment.Enter into rubber cement chemical industry preface after the purification, temperature of charge can be controlled in 50-60 ℃.Can be by silica alumina ratio (SiO
2With Al
2O
3Molecular ratio) 1.5-2.2 batching, best proportioning is 1.7-2.0.This operation adopts synchronous more turbulent flow method feeding, can adopt synchronous turbulent device shown in Figure 2, and it is by the water glass feed-pipe, and the sodium aluminate solution feed-pipe constitutes with the flow rate regulation centrum that can make axial adjustment.After becoming glue, pulp, slurries enter the crystallization operation, and this operation is two sections crystallization.First section is that first causticization coefficient with slurries transfers to 2.0-3.0, and this step can use the industrial sodium aluminate solution of causticization coefficient 3.0-4.0 to modulate; The slurries that mix up are preferably in 70-75 ℃ at 60-85 ℃ crystallization under the condition of stirring, and crystallization time is 3-24 hour, is best with 4-12 hour, and stirring can be adopted mechanical stirring, and rotating speed is 40-50 rev/min.Second section is that one section slurry temperature is carried to 90-100 ℃, continues crystallization, and the time is 0.5-5.0 hour, is preferably 0.5-3.0 hour.After crystallization finished, slurries filtered, and isolated solid washs, and isolated mother liquor and washing lotion are returned the alumina producing flow process.Wash the wet product in back and deposited 2-4 days, then dry and pulverize, promptly get powdery 4A zeolite product.
The present invention compares with existing production method, have that raw material sources are convenient, flow process is simple, call for bids lattice expensive chemical raw material-caustic soda not, no liquid waste disposal is improved environmental pollution, because stirring velocity can slow down in this processing method, realize large equipment easily, large-scale production, and have energy consumption low, the advantage that cost is low.
Accompanying drawing 1 is the specific embodiment exemplary flow.Accompanying drawing is described in detail as follows: at first with the industrial sodium aluminate solution (Al in the alumina producing
2O
3Concentration 25-45 grams per liter) feeds storage tank (1), in storage process, carry out nature cooling or trickle cooling.Water glass enters storage tank (7), and adding distil water is diluted to SiO
2Concentration 10-20%, they are through post precipitation, industrial sodium aluminate solution enters heating tank (2) by storage tank (1) and is heated to 50-60 ℃, water glass enters heating tank (6) by storage tank (7) and is heated to 50-60 ℃ simultaneously, after reaching temperature, industrial sodium aluminate solution enters feeder (9) by heating tank (2) through bag filter (3), under meter (4), and meanwhile water glass enters feeder (9) by heating tank (6) through under meter (5), and two solution are pressed SiO
2/ Al
2O
3Molecular ratio 1.5-2.2 is mixed into glue at synchronous turbulent feeder (9) and enters pulp groove (10), flow into crystallization groove (11) then, the industrial sodium aluminate solution of high causticization coefficient (3.0-4.0) adds crystallization groove (11) by storage tank (8), slurries basicity is brought up to causticization coefficient 2.0-3.0, logical then vapour is heated to 60 to 85 ℃, carry out low temperature crystallized, be incubated 4-12 hour, logical again vapour is warmed up to 90-100 ℃ and carries out the high temperature crystallization, stirring velocity was 40-50 rev/min when the time was 0.5-3.0 hour crystallization, crystallization finishes, and slurries enter pressure filter (12) and carry out the liquid-solid phase separation, feed the distilled water wash solid phase prod then, isolating mother liquor and washing lotion are sent the alumina producing flow process back to, solid unloads and enters bunker (13), through 2-4 days deposit, sends into dryer (14) and dries.Passing through Universalpulverizer (15) then is ground into powdered 4A zeolite and enters finished bin (16)
Accompanying drawing 2 is synchronous turbulent feeding devices.(17) be that water glass feed-pipe (18) is the industrial sodium aluminate solution feed-pipe.(19) be the flow rate regulation centrum, can make axial adjustment.
Claims (7)
1, a kind of processing method of producing detergent use zeolite-4a zeolite, system by sodium aluminate solution and water glass be reacted into glue, pulp, crystallization, liquid-solidly separate, oven dry, pulverizing process constitute, it is characterized in that said sodium aluminate solution is the industrial sodium aluminate solution in the alumina producing flow process, its Al
2O
3Concentration is the 25-45 grams per liter, the causticization coefficient is 1.5-3.0, said one-tenth glue, pulp are to adopt synchronous turbulent method feeding, said crystallization is two sections crystallization, first section is that virgin pulp liquid causticization coefficient is carried to 2.0-3.0, has under the stirring state at 60-85 ℃ and carries out, and the time length is 3-24 hour, second section is to carry out under 90-100 ℃, and the time length is 0.5-5 hour.
2, in accordance with the method for claim 1, it is characterized in that into glue, the pulp operation adopts synchronous turbulent method feeding to install realization by a kind of, and this installs by water glass feed-pipe (17), and sodium aluminate solution feed-pipe (18) and the flow rate regulation centrum (19) that can make axial details constitute.
3, according to claim 1 or 2 described methods, it is characterized in that into glue, the controlled temperature of pulp operation is 50-60 ℃.
4, in accordance with the method for claim 1, it is characterized in that in glue, the pulp operation, the proportioning of sodium aluminate solution and water glass is generally silica alumina ratio 1.5-2.2, is preferably 1.7-2.0.
5, in accordance with the method for claim 3, it is characterized in that into glue, in the pulp operation, the proportioning of sodium aluminate solution and water glass is generally silica alumina ratio 1.5-2.2, is preferably 1.7-2.0.
6, in accordance with the method for claim 1, it is characterized in that the controlled temperature of first section crystallization is 70-75 ℃, stir and be that mechanical stirring, rotating speed are 40-50 rev/min that the time length is 4-12 hour, second section crystallization time is 0.5-3.0 hour.
7, in accordance with the method for claim 3, it is characterized in that the controlled temperature of first crystallization is 70-75 ℃, stir and be that mechanical stirring, rotating speed are 40-50 rev/min that time length 4-12 hour, second section crystallization time was 0.5-3.0 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86106033 CN1013099B (en) | 1986-09-11 | 1986-09-11 | Method of producing molecular sieve-4a zeolite used in detergent-production with industrial sodium aluminate solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86106033 CN1013099B (en) | 1986-09-11 | 1986-09-11 | Method of producing molecular sieve-4a zeolite used in detergent-production with industrial sodium aluminate solution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86106033A CN86106033A (en) | 1988-03-23 |
| CN1013099B true CN1013099B (en) | 1991-07-10 |
Family
ID=4803073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86106033 Expired CN1013099B (en) | 1986-09-11 | 1986-09-11 | Method of producing molecular sieve-4a zeolite used in detergent-production with industrial sodium aluminate solution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1013099B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676326A (en) * | 2012-05-16 | 2012-09-19 | 济南大学 | Method for producing phosphorus-free pulpy detergent by comprehensively utilizing 4A zeolite and production liquid waste thereof |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045760C (en) * | 1995-12-25 | 1999-10-20 | 夏纪华 | Raw stock and method for producing sodium metasilicate pentahydrate, anhydrous quick-dissolving sodium metasilicate 4A molecular sieve and potassium sulfate |
| CN1325377C (en) * | 2004-11-24 | 2007-07-11 | 山东铝业股份有限公司 | Method for producing 4A molecular sieve by using waste liquid of NaY molecular sieve production |
| CN100577565C (en) * | 2007-08-03 | 2010-01-06 | 中国铝业股份有限公司 | Method for producing 4A zeolite |
| CN101264899B (en) * | 2008-04-18 | 2011-01-26 | 中国铝业股份有限公司 | Technique for synthesizing 4A zeolite for detergent by using economic aluminum source |
| CN106276959B (en) * | 2016-08-16 | 2018-01-23 | 中国铝业股份有限公司 | Spherical 4A zeolites, its preparation method, preparation facilities and purposes |
| CN108793180A (en) * | 2018-07-03 | 2018-11-13 | 贵州大学 | A method of preparing the special zeolite of detergent using ardealite and iron red mud |
| CN111453743B (en) * | 2020-03-19 | 2023-05-23 | 中铝山东新材料有限公司 | Preparation method of modified 4A zeolite for washing auxiliary agent and product thereof |
-
1986
- 1986-09-11 CN CN 86106033 patent/CN1013099B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676326A (en) * | 2012-05-16 | 2012-09-19 | 济南大学 | Method for producing phosphorus-free pulpy detergent by comprehensively utilizing 4A zeolite and production liquid waste thereof |
| CN102676326B (en) | 2012-05-16 | 2013-03-20 | 济南大学 | Method for producing phosphorus-free pulpy detergent by comprehensively utilizing 4A zeolite and production liquid waste thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN86106033A (en) | 1988-03-23 |
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